Oh.. well that kind of ruins it..

Nope I'm not ok with them. I think gun-free zones are dumb (with a few possible exceptions like court rooms and prisons) and should be gotten rid of. As to the type of weapon I assume you mean what people call "assault" weapons? With that I have to say you'd be surprised what a 'normal' gun can do compared to a gun that has the word "assault" in it.

Couple things with that. Not very many people do conceal carry weapons compared to the whole population of the US. And many of those mass shootings that did occur happened in gun-free zones, where concealed carry isn’t allowed.
Also there are databases of all the stats and details of mass shootings, but there really aren’t any databases of good guys with gun shooting bad guy with gun before lots of innocent people got shot.
Here are 2 articles that both have several examples of good guys stopping bad guys
http://controversialtimes.com/issues/consitutional-rights/12-times-mass-shootings-were-stopped-by-good-guys-with-guns/
https://www.washingtonpost.com/news/volokh-conspiracy/wp/2015/10/03/do-civilians-with-guns-ever-stop-mass-shootings/?utm_term=.4ad98f64b18c

Easy, Criminal comes in and shoots in the air. Good guys with guns shoot bad guy, he falls down dead. The guards (I assume you mean police officer) come in with guns drawn and say drop your weapon. At this point it can get tricky for some people, but simply follow directions and put the gun down. Police control the scene and no more people die. Good guys all are asked questions and find out good guys all legally own their guns and bad guys gun was reported stolen months/years ago and is also tied to other crimes. Good guys are also identified through security footage at said grocery store. Good guys are also identified through multiple witnesses. Good guys get their guns back and everyone goes home happy knowing good guys and innocents are alive and there is one less stupid criminal in their city.

That is awesome!

Some states don't work that way. If you sign away your rights then instead of paying the mother child support you pay the state child support and then the state pays that to the mother.

True.. Maybe something even a little stronger

Not gonna hurt anyone but himself.

Should have slipped a prozac in that muffin ;)

They can be pretty effective on pistols

Omg! Dr. ew, you can't just go around asking people to touch you!

I can second this

Well he had never even heard of the attack on Pearl Harbor. They don't mention it at in their schools. And though we warred like the Native Americans which they thought meant we would cut out their hearts and eat them and all this other barbaric and cannibalistic things. And he didn't know about the Japanese officers that would shoot the soldiers and women and children if they wouldn't die in battle or commit suicide.